Railway track-drill



(No Model.) 2 Sheets-Sheet 1. L. J. CRECELIUS.

RAILWAY TRACK DRILL.

Patented Dec. 27, '1887.

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faz/af /Oi @ff @L (No Model.) 2 sheets-sheet 2. L. J. CRECELIUS.

A RAILWAY TRACK DRILL.

No. 375,670. Patented Deo.f2'7, 1887.

UNITED STATES PATENT OEEICEO LOUIS J. OREOELIUS, OF ST. LOUIS, MISSOURI.

RAILWAY TRACK-DRILL.

SPECIFICATION forming part of Letters Patent No. 375,670, dated December 27, 1867.

Application ined rely 2o, 18er. semi No. 239,394. (Nomiidi.)

To all whom, it may concern.:

Be it known that I, LoUIs J. CREoELIUs, of St. Louis, Missouri, have made a new and useful Improvement in Railway Track-Drills, of which the following is a full, clear, and exact description.

The present improvement,in part-,is designed more especially to take the place of a portion of the traclrdrill described in a pending application of mine for Let-ters Patent therefor, tiled May 5, 1887, and numbered serially 237,258. Another partmnamely, the means for supporting the dril1-braceiswholly auxiliary thereto. I desire, however, not to be restricted to the drill referred to, the improvement now under consideration being applicable to other forms of drills.

The features of the improvement are the automatic positive drill-feed independent of any spring tension and requiring no adjustment, and the adjustable brace-support.

The preferable form of the improvement is shown in the annexed drawings, making part of this specification.

Figure 1 is a view showing t-he ratchet mechanism, the drill-frame, and a portion of the drill-brace in horizontal section. Fig. 2 is a section on the line 2 2 of Fig. l. The view is looking toward the drill-brace; and Fig. 3 is a view in perspective of the feed-regulating disk. Fig. 4 is a view in perspective of the feednut. Fig. 5 is a view in perspective from the inner side of that part of the drill-frame which contains the bearing in which the feeddog works. Fig. 6 is a view in perspective of the feed-dog bearing, the view being from the outer side of the drill-frame. Fig. 7 is a View in perspective of the feed-dog. Fig. 8 is a view in perspective of the thumb-nut. Fig. 9 is a view in perspective of the adjustable brace-leg. Fig. l0 is a View in perspective of another adjustable brace-leg; and Fig. l1 is a view in perspective showing that part of the brace to which the drill-frame is attached, and illustrating the application of the adjustable lees.

traIhe same letters of reference denote the same parts.

The improvement is illustrated in connection with the railway track-drill referred to.

Only such parts of the construction are into form a shoulder.

eluded in the drawings as are needed for an understanding of the present improvement.

a represents the main bar of the drill-brace.

B, Fig. l, represents the rail being drilled.

O represents the frame containing the mechanism for operating the drill D.

rIhe drill-frame is adapted to turn and to be slipped laterally upon the main bar ai by means of the sleeve-c, and the sleeve can be clamped at the desired point of adjustment by means of the set-screw c'.

The ratchet E is provided with, or made in one piece with, the tubular spindle E', which isjournaled in the frame O at e. The ratchetlever F is journaled upon the spindle E at e'. The squared or feathered screw for feeding the drillis shown atG. Itisjournaled in the frame C at e3, and its outer end is adapted to bear indirectly or directly against the drill, all substantially as in the original construction, saving as modified by the present improved mechanism, and as follows:

H, Figs. l, 3, represents what I term the feed-regulating cam. It has a central square perforation, h, to enable it to be fitted onto the screw or follower G, so as to be carried around with the screw in its rotation; and it resembles a circular washer, saving that it is notched at h and one side h2, and preferably both sides, h2 h3, of the notch are beveled, substantially as shown in Fig. 3.

I represents a feed-nut. It has a threaded central perforation, c', Fig. 4, to enable it to be passed onto the screwA or follower and to engage therewith, so that when held stationary it shall operate to feed the screw when thelastnamed part is rotated. The feed-nut is also provided with, or. constructed to form, a ratchet, i', whose notches i2 in width conform to the notch z/ in the regulating-cam. One side, i3, of the notches t2 is beveled; but the opposite side, f, of the notches is constructed The feed-nut is arranged upon the screw G against or :near the regulating-cam, and the cam and feednut in the present instance are arranged etween the ratchet-spindle and the part ca of the drillframe, substantially as shown in Fig. l.

.I represents a dog of the shape shown more distinctly in Fig. 7. It is held and adapted to be moved longitudinally in a bearing, j, Figs.

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l, 5, 7, in the drill-frame. The bearing is opposite the regulating-cam and feed-nnt, and the cling the stem j3 of the dog, acts, whenever the cam-notch is opposite the dog, to move the deg into the cam-notch and also the coincident feed-nut notch. The dogstem passes outward through the bearing in the drill-frame, and at its outer end is providedwith a thumb-lever, K. This last-named part is provided with the beveled lugs it, Figs. 1,2, 8, and the outer end of the bearingjatj", Figs. l, 6, is notched, the sides j of the notch being beveled. The thumb-lever lugs are adapted to engage in the vnotch j, as seen in Fig. 2, and when thus engaged the dog, by the action of the spring ji, is moved far enough inward into the bearing j to enable it to engage in the cam-notch as described; but by rotating the thumblever upon the dog-stem into a position at right angles to that of Fig. 2-namely, into the position of Fig. l-the lugs k are jumped out of the bearing-notch jl', and the dog is now drawn so far outward in the bearingj as to prevent it from engaging with the cam-notch.

The operation of this improvement as thus far described is as follows: The ratchet, ratch etspindle, and drill are operated in the usual manner, and the cam is carried around with the screw. At every revolution the cam-notch is presented tothe dog, which, saving when the thumb-lever has been adjusted, as described, tohold the dog without the eld of the cam, then drops into the cam-notch, and also into that one of the feed-nut notches which is at the side of the cam-notch. In Fig. 2 the dog is shown in engagement with the feed-nut notch. rlhe cam continues to rotate with the screw; but the feed-nut is now held stationary by reason of the dog encountering the shoulder. The screw now feeds, andit continues to feed until the cam vhas been carried around to bring the dog to the farther side of the cam-notch, and until the dog has been lifted up the beveled side of the cam-notch sufciently for the dog to clear the shoulder in the feed nut. The feeding of the screw or follower G and drill then ceases until the cam is carried around again, and its notch is again presented to the dog. Ihe cam-notch can be varied in width, as indicated by the broken line, Fig. 3. 'Ihe cam can also have more than one notch. I prefer in the present instance a single notch, and also to have the cani-notch,the feed-nut notches in number and width, and the pitch of the screw relatively conform, so that for every revolution of the screw and cam the screw shall be fed a certain distance, as thereby the operator is enabled not only to obtain an automatic positive feed, but also to make the amount of the feed conform to the revolution of the screw. y

Another feature of theimproved drill is the support for the brace. In addition to the fixed leg, which is connected with or made part of the sleeve c, I employ an adjustable leg, L, Figs. 9, l1. It is in effect a sleeve adapted to be slipped upon the main bar at one side of the sleeve-c, and it is provided with a projection, Z, by which means the drill-brace can be upheld upona su pport-such as a tie-which is at one side of the drill-frame. The leg can not only be slipped upon the main bar, but

also can be rotated thereon to suit the shape or exact position of the support beneath, and be held in any desired position with the setscrew Z. An additional means-such as the chair M, Figs. l0, ll-can also be used to uphold the brace. The cliairis shaped to receive the main bar, and it has a projection, m, to raise the brace sufficiently from the support beneath. The chair is permanently attached. to the drill, say by means of the chain m. The chair can thus, within the limit of the chain, be placed more orless at the side of the drill-frame. Both the leg L and the chair M can be used together to advantage in placing the drill, and as they are both permanently at tached to the drill they are not liable to be lost.

I claim* l. In combination, a drilling-tool held in a rotating ratchet, a screw or follower arranged in rear of said tool and operated by the ratchet to advance said tool longitudinally, a nut on said screw for controlling the movementthereof, and automatic means for causing intermittent movementofthescrewlongitudinally,substantially as described.

2. In combination, a drilling tool carried and operated by a ratchet, an independent` screw in rear of the tool and adapted, in connection with a controlling-nut, to be operated automatically by the movement of the ratchet to advance the drilling-toollongitudinally,substantially as described.

3. In combination, the drillingtool carried and rotated by the ratchet, the feed-screw in rear thereof having longitudinal movement, a controlling-nut on said screw having rot-ary movement, and means for holding said nutstationary, whereby the rotary movement of the ratchet will operate to advance the screw, sub stantially as described. I

4. The combinationof the drillbrace, the leg L, and the chair M, said leg being made to slip and to turn upon the main bar, and said chair being attached to the brace by means of the chain, as described.

fitness my hand.

LOUIS J. GRECELIUS.

Vitnesses:

C. D. MOODY, G. H. TEN BROEK.

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